Emergency services are rushing to a remote medical facilty after a massive fire outbreak, but little do they know that they've been exposed to a deadly virus. Lee Myung Hyun and his team are tasked to find the source and to contain it, but this seems to be more difficult than they initially anticipated.

Lee Myung Hyun locks himself up in his office until the result of his blood is known, while the hunt for Kim In Chul continues.